a bad habit is formed, it will take a long time to get rid of it．

Professor Tang didn’t give us a speech today．It was        he had a traffic accident on the way to school．

The Chinese government has made the Mid-autumn Festival a level holiday, _______people will have a day off.

They had no sooner arrived at the airport       it was time to check in.

The engineers are so busy that they have no time for outdoor sports activities, ________ they have the interest.

Usually an adult man can grow about 1.7 meters tall, _____ a few may grow as short as 1.3 meters.

_______ you work hard, you won’t solve this problem.

-----Do you have a minute? I’ve got something to tell you.
-----Ok, ______ you make it short.

—— Oh, it’s raining hard outside. Mum, do you think the milkman will come?
—— Of course. He will come on time _____it rains.

_____ private cars are bringing us convenience, they may also cause more traffic accidents and pollution.